Manual

Rockwell Automation Publication 1756-UM007C-EN-P - November 2011
62 Configure the 1756-HSC Module
Communication Format Options
Multiple controllers can receive data being produced by a 1756-HSC module.
The communication format determines:
• whether a controller owns or just listens to the information.
• the type of configuration options that are available.
• the tags that are generated during the initial configuration.
The following table describes the four communication formats available for
the 1756-HSC/B module.
Communication Format Description
HSC Data Format used by an owner-controller to
invoke the original functionality for the
1756-HSC module. ‘Data’ format generates
tag structures identical to those used by
older revision 1.x HSC modules. This format
is compatible with revision 3.x HSC
firmware but will limit the 1756-HSC
module to revision 1.x functionality.
HSC Data-extended Format used by an owner-controller to
invoke the 1756-HSC module for data
enhancements in HSC revision 3.x.
‘Data-extended’ format functionality
includes Period Rate and Continuous Rate
Frequency modes and dynamic control of
Preset, Rollover, and Output On/Off values.
Listen-only HSC Data Format used by a controller to listen-only to
a 1756-HSC module that is using the
HSC Data Comm Format that is configured
by another controller.
Listen-only Extended Format used by a controller to listen-only to
a 1756-HSC module that is using the
HSC Data-extended Comm Format that is
configured by another controller.
IMPORTANT
See page 63 for specific modes and tags for the HSC Data and
HSC Data-extended Comm Formats.